Elves are from a planet millions of lightyears away, or perhaps from an alternate dimension where life evolved somewhat differently. They're pretty much all dead now (the ones that came to Coris, at least). They arrived as refugees from a great calamity, explorers seeking new horizons, or, most prevalently, the losers in some great, GOT ass power struggle. Nobody knows about this because elves are all dead, but bits and pieces of it survive in myths about the elves (every culture on Coris has a story about the fallen angels or heavenly bodies which enslaved the world before the gods seared them from the face of the planet). Elven spiritual philosophies and belief systems were as varied as those of humanity but the ones that came to Coris mostly subscribed to the three soul model, because the faschy populist uprising that got exiled here used it as their guiding philosophy. Beings may have an animating soul, which gives life and seeks to grow, an aspirant soul, which grants desire and seeks carnal pleasures and food, and a knowing soul, that wants to understand the world, and bestows intelligence. Plants have only an animating soul, animals have an animating and aspirant soul, and intelligent beings (like the elves) have all three. This is a common idea in elven mysticism and there are some branching philosophies around what exactly the three souls mean, but the common take amongst Coris's population is that the goal of an elf is to ascend to immortality by merging their souls into a perfect union of growth, desire, and knowing.
Some of that is fun but it does feel a bit too "pretty," so I'm not sure if I'm gonna keep it. Whatever, it's not really something that players are supposed to interface with, unless I'm running a particularly ancient game where elves still exist and have debates about whether or not humanity possesses a knowing soul (they'd like to think they don't, because it makes the subjugation and enslavement a bit more morally defensible, in their eyes). Whatever the case, elves have a weird relationship with souls and spirits and ghosts and shit. They had very little against necromancy of the soul, it was one of the bedrocks of elven styled magic. This is because when someone dies, their aspirant soul is the thing that becomes a ghost, the animating soul just kinda gets obliterated and the knowing soul cycles back through the elven realm of wisdom, where its contents will be disseminated amongst the knowing souls of the newborn. The aspirant soul is an ugly pitiful thing by itself, and it's basically fine to just torture it however you see fit, according to the elves. This means if you're an elven warrior and you're fighting alongside a compatriot, and you catch a shitty human arrow in the neck, not only do you wind up bleeding to death painfully, your buddy is also probably gonna rip the ghost out of your body and either use it as a shield pack or chuck it at the shitty human archers where it'll explode in a shower of agonizing ghost fire. In some cases your ghost might get kept around as a sort of spirit assassin or something, controlled by a grand elven necromancer, in which case your agony doesn't just last for a few hours, but all of eternity.
Elves generally have very little sympathy for the dead, as I'm sure you can infer from those two little tidbits of info. Death is a personal failure. You should've lived forever if you didn't want your ghost to be tortured for all eternity. It's not even all of you being tortured, just your core personality without any of its memories or anything like that. Don't worry about it too much.
A lot of magic items made during the period of Elven rule are powered by elf ghosts. It's the only way to make the sentient ones, or at least, it's the easiest way. It's so easy to use elven ghosts to make sentient magic items that sometimes magic items made in this way just sorta become self aware like skynet which is frankly reason enough to not do it, but they're super powerful so if you're a shitty space elf you might decide the risk is worth the reward.
The most common way of binding elven ghosts was in small stone or wooden dowels, about 5 inches in length and an inch in diameter, carved with runes. This practice was super widespread, even outside of military usage. Most elves wore a necklace with a little carved idol on it containing their grandpa or mom or brother's spirit, which could whisper little affirmations in their ears and give them advice on how to navigate strategically difficult situations. If you were a soldier you'd probably get your idol stuck inside an automaton with a bunch of other idols steering the thing and fighting for ultimate control. Sometimes you can still find these little idols with their spirits in tact. They might know important knowledge or something, but 99,999 times out of 100,000 they are terribly fucked up after spending millennia inside of a fucking rock, and so they will not be very reliable. Most of them want to get out and will say or do anything they can to accomplish this.
Sometimes the thing inside of the idol isn't even an elf ghost, they really did not discriminate when it comes to spiritual manipulation. Nature spirits, demons, human souls, you name it, elves would've put it in a stick and used it to power their house. They were very bad people.
Spirit prisons are a common find when digging through elven ruins. Despite the most common form being small cylinders, the ones that survived the ravages of time while holding onto their prisoners tend to be more intricate, artistic pieces. This is not due to the shape of the vessel per se, it's just that the higher quality prisons were usually only available to the wealthy, and thus were made with more care in all respects. When these statues are found by human(etc) cultures, they are hauled off and marveled at. Sometimes they get interpreted as idols housing a god or at the very least serving as a mouthpiece for one (and depending on what's inside the idol, this interpretation may not be all that far off). Some mages have libraries full of these things, they are very prized amongst wizards who want to figure out how to reverse engineer the technology. Deliver them to a wizard, and they'll pay you quite well, if they don't decide to slam your consciousness into one of their homemade soul prisons for practice. Wizards are really terrible, aren't they?
